Calude, A and Pagel, M. 2011, How do we use language? Shared patterns in the frequency of word-use across seventeen World
languages Philosophical Transactions of the Royal Society B 366: 1101-1107. [PDF]
This article is also printed in the book "Culture Evolves", Oxford University Press.

Cotgreave, P. and Pagel, M. 1997. Predicting and understanding rarity: the comparative approach. To appear in (W. Kunin and K. Gaston, eds) The Biology of Rarity: the causes and consequences of rare-common differences. Chapman and Hall, 237-261.